A new series of N-substituted tetraphenylethene-based benzimidazoles: Aggregation-induced emission, fast-reversible mechanochromism and blue electroluminescence

A new series of N-substituted tetraphenylethene-based benzimidazoles were designed and synthesized. These compounds are blue fluorescence in crystalline state and show fast-reversible mechanochromism. Furthermore, both of non-doped OLED devices fabricated with compounds 3b and 3c as emitters are blue emission.213